[ xxiii. ] 



Binney. Terr. Moll., ii., p. 143, t. 45, f. 3, 



1851. 

 W. G. Binney, 1. c. iv."; p. 59, 1859. 

 Bland, 1. c. vii.. p. 425, 1862. 

 H. dausa, Ferussac. Hist. Nat., t. 51, f. 2. No. 1. 



TRIODOPSIS. 



Fig. 12. T. FALLAX, Say. Jour. Acad. Nat. Sci., ii., 

 p. 119, 1821. 

 DeKay, Moll. N. Y., p. 28, t. 3, f. 23, 1843. 

 W. G. Binnej, 1. c. iv., p. 71, 1859. 

 H. tridentata, (part) Binney. Terr. Moll., ii., 



p. 183, t. 28, 1851. No. 2. 



" 14. T. VULTUOSA, Gould. Proc. Bost. Soc. Nat. 



Hist., iii., p. 39, 1848. 

 Binney, Terr. Moll., ii., p. 189, t. 40a., f. 4, 



1851. 

 W. G. Binnej, 1. c. iv., p. 75, 1859. 

 Bland, 1. c. vii., p. 439, t. 4, f. 21, 1862. No. 6. 



'' 15. T. MuLLANi, Bland and Cooper. Ann. N. Y. 

 • Lye. Nat. Hist., vii., p. 363, t. 4, f. 16- 

 17, June, 1861. * No. 7. 



" 16, 19. T. LORiCATA, Gould. Proc. Bost. Soc. Nat. « 



Hist., p. 165, Aug., 1846. 

 ' Binney, Terr. Moll., ji., p. 145, t. 29a., f. 2, 

 1851. 

 Gould, Moll. Wilkes' U. S. Expl. Exped., p. 



68, fig 39, a. b. c, 1852. 

 W. G. Binney, 1. c. ix., p. 14, 1859. 

 IT. Lecontei, Lea. Trans. Am. Philos. Soc, x., 



p. 303, t. 30, f. 13, 1852. No. 8. 



" 17. T. YucATANEA, Morelet. Testacea nov. Am. 



Centr., i., p. 9, 1849. No. 5. 



STENOTREMA. 



" 18, 20. S. MONODON, Rackett. Linn. Trans., xiii., 

 p. 42, t. 5, f. 2. 

 Binney, Bost. Jour. Nat. Hist., iii., p. 360, 

 t. 10, f. 1, Jan., 1840. 

 . Binney, Terr. Moll , ii., p. 147, t. 41, 1851. 

 W. G. Binney, 1. c. iv., p. 60, 1859. 

 Bland, 1. c. vii.. p. 431, Dec, 1861. 



